Transient analysis of ventilated tunnels with junctions using graph theory
Transient analysis of ventilated tunnels with junctions using graph theory
- New search for: Maeda, K.
- New search for: Nakahori, I.
- New search for: Sou, A.
- New search for: Kawase, E.
- New search for: Mizuno, A.
- New search for: Maeda, K.
- New search for: Nakahori, I.
- New search for: Sou, A.
- New search for: Kawase, E.
- New search for: Mizuno, A.
The conventional analysis, known as the closed loop method, is hand-made for each structure of a tunnel. A method for general-purpose and high-speed numerical analysis of road tunnel ventilation using graph theory is presented. A complex tunnel with a network, where arcs correspond to pipelines, and nodes correspond to their physical interconnection points is represented in graph theory. Some reasonable calculated results of a longitudinal and a transverse ventilation tunnel were obtained. The validity of the method is verified through the comparison of calculated and measured results in actual tunnel data. Some reasonable calculated results of the wind velocity and the pollutant concentration in short CPU time showed the superiority of the new scheme over the existing algorithm for the wind pressure loop method. The coincidence of simulation results is quantitatively verified with measured data on the Shin-Kobe tunnel, J. Its length is 6.9 km and incorporates a mixed ventilation system. In the future, it is expected that the new method will be more widely used in the big cities that have complex tunnels with many junctions.
Document information
Transient analysis of ventilated tunnels with junctions using graph theory
Kurzanalyse belüfteter Tunnel mit Kreuzungen unter Einsatz der Graphentheorie
2003
15 Seiten, 11 Bilder, 1 Tabelle, 6 Quellen
Conference paper
English